Residual stress characteristics in a non-circular drawing sequence of pearlitic steel wire

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• 作者：Hyun Moo Baek ; Sun Kwang Hwang ; Il-Heon Son…
• 关键词：metals ; drawing ; deformation ; residual stress ; non ; circular drawing sequence
• 刊名：Metals and Materials International
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：22
• 期：6
• 页码：1083-1090
• 全文大小：1,650 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Metallic Materials
  Operating Procedures and Materials Treatment
  
• 出版者：The Korean Institute of Metals and Materials, co-published with Springer Netherlands
• ISSN：2005-4149
• 卷排序：22

文摘

In this paper, characteristics of residual stress in pearlitic steel wire drawn by a non-circular drawing (NCD) sequence with two processing routes, NCDA and NCDB, were experimentally and numerically investigated up to the 12th pass in comparison with conventional wire drawing (WD). For experimental investigation of the axial residual stress at the surface of the drawn wire, destructive (deflection) and non-destructive methods were employed. According to the experimental results, axial surface residual stress of the drawn wire by the NCD sequence was lower and more homogeneous compared to the conventional WD. Based on the elasto-plastic numerical simulation results from the surface to the center of the drawn wire using a commercial DEFORM-3D, an empirical relationship between residual stress and reduction of area was determined to predict the residual stress evolution in the multi-pass WD, NCDA, and NCDB, in that order. From the results of this investigation, it can be construed that the NCD sequence, especially the NCDB, might be helpful in improving the residual stress characteristics of pearlitic steel wire to improve its mechanical behavior and service life.